And polishing annular articles



(No Model.) 2 Sheets-Sheet 1.

I J. BANWELL. MACHINE FOR ABRADING AND POLISHING ANNULAR ARTICLES.

No. 537,432, Patented Apr. 16, 1895.

Inventor,

I fifty-J B it/265566,

(No Model.) 2 Sheets-Sheet 2.

J. BANWELL. MAGHINE FOR ABRADING AND POLISHING ANNULAR ARTICLES.

No. 537,432, Patented Apr. 16, 1895.

HWUHF H Wit/$6 6566,

UNITED STATES PATENT OFFICE,

JAMES BANWELL, OF CLEVELAND, OHIO, ASSIGNOR TO THE CLEVELAND WOOD TURNING COMPANY, OF SAME PLACE.

MACHINE FOR ABRADING AND POLlSHlNG ANNULAR ARTICLES.

SPECIFICATION forming part of Letters Patent No. 537,432, dated April 16, 1895. Application filed September 8,1894:- Serial No. 522,418- (No model.)

To all whom it may concern.-

Be it known that I, JAMES BANWELL, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented certain new and useful Improvements in Machines for Abrading and Polishing Annular Articles, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

The annexed drawings and the following description set forth in detail, one mechanical form embodying the invention; such detail construction being but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings-Figure I represents a side view of my improved machine for abrading and polishing annular articles; Fig. II, a front view of the machine; and Fig. III, a sectional detail view of one of the peripherally grooved rollers, illustrating the lining of the groove.

A peripherally grooved roller, A, issecured upon the end of a shaft, A, having a drive.

pulley, A to which rotary motion is imparted by means of a belt, or any other suitable mechanism for imparting rotary motion to the shaft. The peripheral groove of the roller is preferably lined with leather or other suitable material which will not mar the article to be treated, and yet have suflicient frictional contact with the article to rotate the same with it, when it is rotated. A peripherally grooved roller, B,-the groove of which is similarly lined,-is journaled in the same vertical plane as'the first-mentioned roller, and forward of the same and preferably slightly below the same. Said roller B is preferably of smaller diameter than the drive roller, and both of said rollers are so arranged that they will have bearing against the periphery of the annular article to be treated, at two separate points of said periphery. A small, peripherally grooved roller, C, is journaled upon a lever, C, so as to be in the same vertical plane as the two first mentioned rollers. The lever C, is pivoted at one end and has the roller C journaled upon a stud, c, at its other end, and the lever and roller are drawn so as to bring the roller down in the space between the two other rollers, by means of a cord, C secured to the lever, carried over a pulley, c, and having a Weight, G at its end; by means of a spring, or by'any other equivalent device.

The annular article to be treated is placed to have two points of its outer periphery bear against two points, one on each of the stationarily journaled rollers, and the movable roller is brought to bear against a point upon the inner periphery of the annular article, between the two external points of contact. When one of the rollers,in this case, the roller A,has rotary motion imparted to it, the article will be rotated, so that abradirig and polishing material may be applied to the rotating article, and the article may be sandpapered or otherwise abraded, and afterward polished. The annular articles may easily be inserted and removed, by withdrawing the movable roller from the stationarily journaled rollers.

I make no broad claim for a machine for abrading and polishing annular articles having revoluble means for supporting the periphery of the article to be abraded or polished from various points of its periphery, and having means for rota-ting one of such supports; regardless of whether such supporting means bear against the inner or the outer periphery of the article, as such machineis not original with me, but has been heretofore made.

Other modes of applying the principle of my invention may be employed for the mode herein explained. Change'may therefore be made as regards the mechanism thus disclosed, provided the principles of construction set forth respectively in the following claims are employed.

I therefore particularly point out and distinctly claim as my invention 1.,In a machine for abrading and polishing annular articles, the combination of two stationarily journaled, peripherally grooved rollers, a small peripherally grooved roller having means for yieldingly forcing it be- ICO tween the stationarily journaled rollers, and journaled rollers and having a weight or simimeans for imparting rotary motion to one of lar device attached to it to yieldingly hold said rollers, substantially as set forth. the roller in such position, substantially as 2. In a machine for 'abrading and polishset forth.

ing annular articles, the combination of two In testimony that I claim the foregoing to stationarily journaled, peripherally grooved be my invention I have hereunto set my hand rollers, means for revolving one of said rollthis 20th day of August, A. D. 1894.

ers, a smaller peripherally grooved roller, and JAMES BAN WELL.

a lever upon which said roller is journaled, said lever being fulcrnmed to allow the roller upon it to project between the stationarily Witnesses:

WM. SEOHER, W. F. HOPPENSACK. 

